The article presents the issues related to the use and functionality of ballistic helmets. Detailed analyzes were related to the rating of the sustainability of fixing helmet harness system. In the article some methodology was also presented, which allows to assess the risk measurably, related to unhooking of the interior fittings of the helmet. The result of this analysis was the development of own procedures of the Laboratory of Metrology ITB „MORATEX”. These procedures were related to the determination of peel strength of the velcro fastening and also to the determination of adhesion of the glue side of velcro hook tape to the inner side of the shell of the helmet. The study has been carried out under the project „Integrated Individual Combat Systems TITANIUM”.